Ski-Doo MX Z 800 X Tail Light Bulb Size

The Ski-Doo MX Z 800 X tail light requires bulb size 1157 or P21/5W depending on the specific version of the component. Data for the lighting specifications covers the range from 2001 to 2010.

The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.

Bulb Size by Year Range

Years	Bulb Size
2008-2010	1157
2001-2006	1157

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Dual-filament bulb with BAY15d bayonet base. 12V, 21W/5W.	1157

Other Locations

Additional Notes

The 1157 is the tail light bulb size specified for the Ski-Doo MX Z 800 X across all listed model years from 2001 to 2010, with the exception of 2007, which is not present in the specifications.
The 1157 is an ANSI-standardized bulb type recognized in both the United States and Canada, meaning it conforms to a defined set of electrical and physical parameters shared across manufacturers.
This bulb uses a BAY15d bayonet base, a two-pin offset base design that physically prevents incorrect insertion by positioning the two pins at different heights around the base.
The 1157 is a dual-filament bulb, operating at 21W on the high-intensity filament and 5W on the low-intensity filament, which allows a single bulb to serve both brake light and running light functions within one housing.
The bulb operates at 12 volts, consistent with the standard electrical system voltage found in most production snowmobiles of this type.
Because the BAY15d base uses an offset pin arrangement, it is not interchangeable with single-pin bayonet bases or with the similarly named BA15d base, which uses pins at equal heights.